Improvement in ventilators



UNITED STATEs PATENT OFFICE.

PATRICK MIHAN, OAMBEIDGEPORT, MASSACHUSETTS.

lM PROVEM ENT IN VENTI LATO RS.

Specification forming part of Letters Patent No. 195,832, dated October2, 1877 application filed September 7, 1877.

To all whom it may concern:

Be it known that I, PATRICK MIHAN, of Gambridgeport, of the county ofMiddlesex and State of Massachusetts, have invented a new and usefulImprovement in Ventilators; and do hereby declare the same to bedescribed in the following specification, and represented in theaccompanying drawings, of which- Figure 1 is a front elevation, Fig. 2 avertical section, and Fig. 3 a horizontal section, of a ventilatorembodying my invention.

My invention relates to or consists in an apparatus to be applied to aventilating-flue to promote the draft thereof, by the employment ofwaste steam, one object being to utilize such steam, or obtain heattherefrom, and apply it in a manner to aid in effecting the ventilationof an apartment or building.

The body A of the said ventilator is composed of two hollow conicfrusta, a, b, united at their larger bases, the lower one being made toencompass and extend up from a tube, 0, which for a short distanceprojects up into such frustlnn, in order to form with it a trough, a, tocatch any water that may pass down the inner surfaces of the frusta a1). Such trough has a hole, 0, leading out of it, to discharge any waterso intercepted, and prevent it from passing down the inner surface ofthe tube 0.

Within the body A are two othersuch cases, D E, one of which is placedin the upper and the other in the lower part of the said body. Thesecases D E are connected by a series of bent pipes, F, leading out of oneinto the other. Furthermore, a tube, Gr, opens out of the bottom of thelower case D. Another tube, H, tapering at its lower part, projectswithin the case D, and extends upward therefrom to and opens into thebottom of the case E. There is a damper, I, in the lower part of thetube H, the spindle c of such damper being provided with a lever, d,having a weight, e, at one end, and a chain or rope, f, fixed to theother end. The gravitating power of the weight is to open the damper,which is to be closed by pulling on the rope.

Atube, K, arranged concentrically within the tube H, extending nearly tothe lower end thereof, and upward through the case E to some distanceabove the case A, is surmounted by a conical hood, L, and has fixed toit another and larger conical hood, M. This latter hood is placed abovethe body A, and covers its upper open end.

The two cases D E and their series of connecting-pipes F, the pipe H,the exit-tube K, and the damper I constitute a radiator to heat the airin the body A. Waste steam from a steam-engine or othermechanism is tobe used to heat the radiator, which, by radiating heat into the airwithin the body A, will cause such air to be rarefied, and to rise andinduce an aerial current up through and out of the said body. Thus wastesteam is to pass into the pipe leading down from the case D. Should thedamper be closed, this steam will be caused to flow from the case Dthrough the series of pipes F, and into the case E, and thence down thetube H, and into and through the tube K; but should the damper be open,the steam will pass off through the tube K without going through theradiator in the way as hereinbefore explained.

I claim- 1. For use in the body A, in manner and for the purposedescribed, the ventilator, substantially as set forth, composed of thetwo cases D E, the series of connecting tubes F, the pipe H, damper I,and the descending and exit pipes H K, arranged and applied essentiallyas shown and described.

2. The combination of the two hoods L M, the body A, the pipes K H,damper Leases D E, and their connecting-pipes F, arranged and appliedsubstantially in manner and to operate as set forth.

PATRICK MIHAN. Witnesses:

R. H. EDDY, J. R. SNow.

